US465627A - Die for making-claw-bars - Google Patents

Description

(No Model.) 3 Sheets-Sheet 2.

M. E. ELLIOTT. DIE FOR MAKING CLAW BARS.

No. 465,627. Patented Deo. 22, 1891.

Umm Mtns MAHLON ERSKINE ELLIOTT, OF OUMBERLAND, MARYLAND, ASSIGNOR OF TVVO-THIRDS TO THOMAS A. HICKS AND IVILLIAM O. DICKEY, OF PHILADELPHIA, PENNSYLVANIA.

DIE FOR MAKING CLAVVWBARS SPECIFICATION forming part of Letters Patent No. 465,627, dated December 22, 1891. Application filed January 22, 1891. Serial No. 378,699.` (No model.)

To @ZZ whom it may concern:

Be it known that I, MAHLoN ERSKINE EL- LIOTT, a citizen of the United States, residing at Ou mberland', in the county of Allegany and State of Maryland, have invented a new and useful Machine for Making Claw-Bars, of which the following is a specification.

This invention relates to a machine for molding claw-bars.

Heretofore claw-bars for drawing railroadspikes have been forged by hand, whereby their production Was attended With considerable tedious Work and consequent expense.

By my invention Ipropose to forni claw- 'bars by machinery constructed in a cheap and simple manner, thereby lessening the cost of the claw-bar and increasing the production without in the least impairing their general efficiency and durability.

Vith the above and other objects in view the invention consists in certain features of construction hereinafter specified, and par ticularly pointed outin the claims.

Referring to the drawings, Figure l is a perspective of a male and female die constructed in accordance With my invention and adapted to form a claw-bar, with the exception of the claw thereof. Fig. 2 is alongitudinal section of the die, the same being closed. Fig. Sis a detail in plan of the blank previous to submitting the same to the act-ion of the die. Fig. 4 is a similar View of the blank afterthe iirst step. Fig. 5 is a similar view after the second step, or after it has been submitted to the die. Fig. 6 is a perspective of the bar-clamps for holding the same while ithe claw is formed. Fig. 7 is an inner face View of one of the clamps. Fig. S isa viewin perspective of the punch for forming the claw. Fig. 9 is a perspective in detail of the completed clawbar. Fig. l0 is a perspective view of a male and female die, the same being opened and of a modilied construction. Fig. ll is a section view on the line @om of Fig. l0. Fig. l2 is a similar section on the line 'yy of said figure. Fig. 13 is a similar view on the line e ,e of Fig. lO.

Like numerals of reference indicate like parts in all the figures of the drawings.

Referring to Fig. l, l designates the female die, and 2the male die, and the same are substantially oblong, and the former die is provided with a longitudinally-disposed recess `or die-opening consisting of a shallow portion 3, rectangular in cross-section, Which recess merges at its inner end into a deepened substantially V-shaped portion 4. At one side of the recess 3 is formed a shallow depression or recess 5, the louter rWall G of Which is at a right angle to the bottom of the depression, while the innerwall is inclined toward the inner edge of the recess 3. The recess 5 is open at both ends and at its rear end has a curved inner end wall 7. If desired, the dierecess 5 maybe formed in a separate die from that containing `the recesses 3 and 4, and the same are merely formed in the present die.'

The male die 2 (illustrated in Fig. l) is provided with a projection S, of a width adapting the same to close Within the recess 3 and of a depth whereby it about halfpfllls said recess. The inner end of the enlargement S is rounded or beveled, as at 9, and at its eX- tremity meets the edge of the depression 4:. In this instance at one side of the enlargement 8 there is formed in the inner face of the die 2 a depression lO, having an outer straight Wall ll-`-that is, at a right angle to the bottom of the depressionwand having its inner wall inclined, as at 12, to correspond With the inner inclined Wall 13 of the recess or depression 5.

Referring to Fig. 6, 1+i designates a pair of clamping blocks or dies, which are similarin construction and facial contour. inner faces said dies are provided with recesses or depressions corresponding to the general shape of an ordinary claw-bar-that is, having the shank-receiving recess l5 merging into the Welhknownfoot, consisting of the toe 16 and the heel I7, the latter having its bottom inclined. In front of the heel portion of the recess the dies or clamps have corresponding portions of their inner faces removed, forming a vertical slotlS between the faces of the dies or clamps.

In Fig. 3 I have illustrated the blank from which the claw-bar is formed, and the same is simply an ingot, one end of Which is spread laterally, inclined, and having its extremity Upon thel IOO slightly drawn out. In this figure 19 designates the ingot, which has been drawn out or upset to form the foot 20, having the heel portion 21v and the toe 22, which latter is reduced toward its extremity, as is evident. The blank thus approximating the shape of the completed claw-bar is of a uniform thickness at its shank, toe, and heel portions, and for the purpose of reducing the latter portions at opposite sides, as shown in Fig. 4 at 23, the same is placed in the recess 5 of the female die land the male die mounted thereover and the two subjected to the action of a steam or otherimpelled hammer. Such action reduces the heel of the blank, and by the peculiar coniiguration of the die-recesses gives the blank the-shape shown in Fig. 4 The now partially-formed claw-bar is withdrawn from the recess 5 and placed edgewise into the recesses 3 and 4 of the female die, after which the male die is replaced upon the female kdie and the two again submitted. to the action of the steam or other impelled hammer. The curvature of the recess 4 at its inner end gives the curvature 24 to the clawbar, as illustrated in Fig. 5, and in fact completes said claw-bar, with the exception of forming the slot 25. (Shown in Fig. 9.) I-Ieretofore this slot has been formed by drillinga hole in the toe of the bar and then cutting the metal away from the hole to the extremity of the toe. A variety of ways may be devised for forming this slot, all of which I consider within the scope of Iny invention, and I will now proceed to describe one way which experience has taught me to be both expeditious and effective.

Reference is now had to the clamping-dies. (Illustrated in Figs. 6 and 7.) These dies, as heretofore described, have facial depressions that exactly agree with the contour of the completed claw-bar, and into these Adepressions the now nearly completed claw-bar is' introduced, and the die is closed and placed between two clamping-jaws 26, whereby the dies and the claw-bar may beheld immovable. By reason of the slot or opening I8, formed in the inner faces of the clamping-dies, the toe portion of the claw-bar extends thereinto. Any suitable punch-for instance, the punch 28 (illustrated in Fig. 8)-may be introduced into the slotand the clamp passed under the hammer, whereby it is driven through the toe to form the claw 25 for engaging the spikes. By this means I provide a system of dies which will readily and rapidly form claw-bars of the ordinary shape and heretofore tediously formed by hand and hammered to shape.

It will be evident that other constructions of dies may be substituted for the one herein shown, and I have herein illustrated and will proceed to describe one form of die that may be devised.

In the substituted device I employ the two dies, both male and female, the latter designated as 29, having the depression or recess 30 formed upon its inner face and corresponding to the claw portion of the completed article. At one side of the same there is provided a curved face 31, extending from about the longitudinal center of the die to the edge of the same and corresponding to the inner curved portion of the claw-bar. At one side ot' the curved face 3l is a curved depression 32, also extending from the longitudinal center of the female die to the outer edge of the same and corresponding to the under or outer curved face of the foot of the claw-bar.

Y*The male die is provided with a depending curved enlargement or face 33 and in rear of `the same with a recess 34, cut into the face of the die, the latter corresponding with the inclined wall 35 of the recess 30 and the depending curved portion 33 corresponding with the upper curved portion of the toe of the claw-bar. I

At one side of the die portions 33 and 34 and opposite the curved face 3l, which forms or partially forms the inner curved part of the toe, there is formed in the male die a curved sheet or face 37, which somewhat approximates the under side of the foot of the claw-bar. At one side of the face 37 is a convexed rounded face 38,*which combines with theponcaved face 32 to form the toe portion of the foot of the claw.

The convexed and concaved faces 3l and 37 iirst receive the blank, which is of the same form as submitted to the die first described. I-Iere the toe is partially shaped or the metal slightly reduced, and after such operation the blank is removed, inverted, and placed between the concaved and convexed faces 32 and 38, respectively, Where it is still further reduced. After this operation the now partially-formed claw-bar is introduced into the recess 30 and the die is again closed. The dies are now submitted to the action of a steam or other impelled hammer and the" l. The combination, with the female die having a recess corresponding to the foot and shank of a claw-bar, of a male die having a projection on its inner face, extending into the shank-forming recess of the female die IOO IIO

and having its end terminating close to the inner end of the foot-forming recess of the female die, substantially as specified.

2. The combination, with the female die having a recess approximating the shape of a claw-bar, of a male die having a similar recess, the rear Walls of said die being.;` inclined, as shown at 13 and 12, substantially as specified.

3. The combination of the male and 'female dies having the recesses 5 and l0, the outer walls of which are inclined, the female die l having the recesses 3 and 4 and the male die 2 having the facial projection 8, partially filling the recess 3 and having its inner end

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